The gutsy single mom who helped prosecutors crack the case against accused FBI mob mole Lindley DeVecchio was found choked and left for dead early yesterday in a remote section of Brooklyn.

Cops responding to a 5:45 a.m. 911 call found Angela Clemente in the driver’s seat of her car – its door open, srawled half in and half out, near the Caesar’s Bay strip mall in Bensonhurst.

Clemente, 40, was battered and bruised but alive – and able to tell investigators about her early-morning cloak-and-dagger rendezvous with a professed informant that ended with the near-fatal attack.

Based on what she said, investigators believe Clemente – a forensic-intelligence analyst who law-enforcement sources said was volunteering her services to prosecutors – was set up by the would-be tipster, who lured her to the furtive meeting with promises of information about two Long Island murders she believed were linked to the recently indicted DeVecchio and his prized underworld canary, the late mob boss Gregory Scarpa.

Sources said Clemente was convinced that three mobsters convicted of the murders in 1994 had been framed by the G-man and the Mafia capo, and she was trying to unearth evidence against two young Colombo associates she suspected had pulled off the hits.

From her hospital bed at Lutheran Hospital in Brooklyn, where she suffered a seizure yesterday while being treated for neck and body injuries, a groggy Clemente told investigators she had received several messages from her assailant before agreeing to the early-morning meeting.

She said she dropped off her 8-year-old son, Santos, with her teenage daughter in New Jersey at midnight. She told her daughter she was going to meet someone on a case and then drove to Brooklyn.

Clemente made contact with her anonymous tipster at 82nd Street and 13th Avenue in Bensonhurst, and they agreed to drive their cars nearby to the southern end of Bay Parkway, at Gravesend Bay.

There, her bearded would-be informant got into her black Hyundai and they started talking about the case. She told investigators he pretended to have new information.

And then, Clemente said, he asked her, “Are you going to continue on this case?”

“Yes,” she answered.

With that, she told cops, he whacked her on the right side of her body with something hard, and then put his hands around her neck and started choking her.

Apparently convinced he had killed her, he took off.

At 5:45 a.m. Clemente was spotted lying halfway out of her open car door by a passing dog-walker and a jogger.

Cops rushed to the scene and Clemente was taken by ambulance to Lutheran Hospital, where a huge bruise was found on her right side, and choke marks were found on her neck. There were also injuries to her head and lips.

She didn’t know the name of her assailant, but she did provide cops with a description.

She remained hospitalized overnight, under uniformed police guard.

Police canvassed businesses along both 13th Avenue and Bay Parkway in hopes of coming up with surveillance video.

“We believe it’s tied to the Nassau case,” a law-enforcement source said of the attack.

Stephen Dresch, a forensic-intelligence analyst who has worked with Clemente on the DeVecchio case, said he cautioned her to meet tipsters only in public places.

He said she was usually cautious, “but it was not completely out of character” for her to meet someone alone in a desolate or dangerous situation.

He said he didn’t know about Clemente’s mystery informant.

“She had a number of meetings recently with people who had contacted her either anonymously or in confidence” about the Nassau case, Dresch said.

Those meetings “were helpful, she was happy,” he said.

Assistant Brooklyn DA Michael Vecchione, the prosecutor who credited Clemente with helping him get a murder indictment against DeVecchio, believes the attack is linked to the former G-man.

“Let’s put it this way, it’s not unrelated,” he said.

Vecchione also would not discount the possibility that the murder attempt was the work of DeVecchio sympathizers, some of whom are former FBI agents.

Earlier this month, Vecchione complained in court that some witnesses had been harassed by DeVecchio’s FBI buddies.

Clemente, a 5-foot-4 divorced mother of three, spent 20 years testing blood and doing autopsies for a pathologist before becoming one of the country’s top forensic-intelligence analysts – providing crucial research to lawmakers and officials on mob, rape and terrorism cases.

DeVecchio, out on bail, is living in Florida under court order to wear an electronic-monitoring bracelet. Scarpa died in prison in 1994.